staging: rtl8723bs: hal: replace spaces by tabs.

Fix checkpatch error "ERROR: code indent should use tabs where possible"
in hal_com_phycfg.c:1726.

Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>